我国华北地区粳稻品种抽穗期遗传分析

doi:10.3969/j.issn.1001-7216.2009.06.06

摘要/Abstract

摘要： 设置长、短日照和高、低温共4种环境，分析了我国华北地区14份主栽粳稻品种的抽穗期光、温敏感性及基本营养性。结果表明，华北地区多数粳稻品种表现出感光性，但感光性大都偏弱，抽穗期长短与品种的感光性呈显著线性相关。此外，大多数品种对温度也比较敏感。并利用一套抽穗期主基因近等基因系对这些品种抽穗期基因型进行了分析。结果表明，所有华北地区粳稻品种都携带主效感光基因E1，而在Se1位点，有11个品种为非感光的Se1e,同时，有13个品种都携带早熟基因Ef1，另外，有9个品种还携带具有一定感光抑制效应的hd2。这些结果从基因型角度揭示了华北地区粳稻品种具有一定的感光性和较短的基本营养生长期的原因，为华北地区选育适宜抽穗期的粳稻品种提供了依据。

关键词: 水稻, 抽穗期, 遗传分析, 华北地区, 感光性, 感温性, 基因型

Abstract: Heading date is one of the most important traits for the adaptation of rice to different cultivation areas and cropping seasons. North China (34°N to 42°N) plays an important role in japonica rice planting. Variation for heading date among 14 japonica rice cultivars grown in North China was characterized, and their sensitivity to variation in photoperiod and temperature was analyzed. Among them, 11 cultivars were sensitive to photoperiod，but the photoperiod sensitivity of most cultivars were weak. A regression analysis showed that heading date is closely correlated with photoperiod sensitivity. Thirteen cultivars were also sensitive to temperature. Genetic analyses were conducted on these 14 cultivars using a set of heading date near isogenic lines. The results showed that all these japonica cultivars carried the photoperiod sensitivity gene E1, and most of these cultivars carried the dominant earlyheading gene Ef1 and recessive photoperiod insensitivity gene Se1e. The photoperiod sensitivity of some cultivars can be repressed or weakened by Ef1 and the recessive allele hd2 they carried. The above results indicates that the japonica rice cultivars grown in North China with weak photoperiod sensitivity and short basic vegetative growth phase were mainly determined by heading date genotypes, and could be useful for breeding new cultivars well adapted to North China.

Key words: rice, heading date, genetic analysis, North China, photoperiod sensitivity, temperature sensitivity, genotype

魏祥进,江玲,徐俊锋,陆广文,王洪俊,王智权,翟虎渠,万建民. 我国华北地区粳稻品种抽穗期遗传分析[J]. 中国水稻科学 2009,23(6): 595-603 . , DOI: 10.3969/j.issn.1001-7216.2009.06.06 .

WEI Xiang-jin,JIANG Ling,XU Jun-feng,LU Guang-wen,WANG Hong-jun,WANG Zhi-quan,ZHAI Hu-qu,WAN Jian-min. Genetic Analysis of Heading Date of japonica Rice Cultivars in North China[J]. Chinese Journal of Rice Science 2009,23(6): 595-603 ., DOI: 10.3969/j.issn.1001-7216.2009.06.06 .

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